1 # This tool creates a shared library from the LLVM libraries. Generating this
2 # library is enabled by setting LLVM_BUILD_LLVM_DYLIB=yes on the CMake
3 # commandline. By default the shared library only exports the LLVM C API.
5 add_definitions( -DLLVM_VERSION_INFO=\"${PACKAGE_VERSION}\" )
11 llvm_map_components_to_libnames(LIB_NAMES ${LLVM_DYLIB_COMPONENTS})
13 if(LLVM_LINK_LLVM_DYLIB)
14 if(LLVM_DYLIB_EXPORTED_SYMBOL_FILE)
15 message(WARNING "Using LLVM_LINK_LLVM_DYLIB with LLVM_DYLIB_EXPORTED_SYMBOL_FILE may not work. Use at your own risk.")
18 # libLLVM.so should not have any dependencies on any other LLVM
19 # shared libraries. When using the "all" pseudo-component,
20 # LLVM_AVAILABLE_LIBS is added to the dependencies, which may
21 # contain shared libraries (e.g. libLTO).
23 # Also exclude libLLVMTableGen for the following reasons:
24 # - it is only used by internal *-tblgen utilities;
25 # - it pollutes the global options space.
26 foreach(lib ${LIB_NAMES})
27 get_target_property(t ${lib} TYPE)
28 if("${lib}" STREQUAL "LLVMTableGen")
29 elseif("x${t}" STREQUAL "xSTATIC_LIBRARY")
30 list(APPEND FILTERED_LIB_NAMES ${lib})
33 set(LIB_NAMES ${FILTERED_LIB_NAMES})
36 if(LLVM_DYLIB_EXPORTED_SYMBOL_FILE)
37 set(LLVM_EXPORTED_SYMBOL_FILE ${LLVM_DYLIB_EXPORTED_SYMBOL_FILE})
38 add_custom_target(libLLVMExports DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE})
41 add_llvm_library(LLVM SHARED DISABLE_LLVM_LINK_LLVM_DYLIB ${SOURCES})
43 list(REMOVE_DUPLICATES LIB_NAMES)
44 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") # FIXME: It should be "GNU ld for elf"
45 # GNU ld doesn't resolve symbols in the version script.
46 set(LIB_NAMES -Wl,--whole-archive ${LIB_NAMES} -Wl,--no-whole-archive)
47 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
48 set(LIB_NAMES -Wl,-all_load ${LIB_NAMES})
51 target_link_libraries(LLVM PRIVATE ${LIB_NAMES})
54 set_property(TARGET LLVM APPEND_STRING PROPERTY
56 " -compatibility_version 1 -current_version ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}")
59 if(TARGET libLLVMExports)
60 add_dependencies(LLVM libLLVMExports)
63 if(LLVM_BUILD_LLVM_C_DYLIB)
64 # To get the export list for a single llvm library:
65 # nm ${LIB_PATH} | awk "/T _LLVM/ { print $3 }" | sort -u | sed -e "s/^_//g" > ${LIB_PATH}.exports
68 message(FATAL_ERROR "Generating libLLVM-c is only supported on Darwin")
71 set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_BINARY_DIR}/libllvm-c.exports)
73 set(LIB_DIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
74 set(LIB_NAME ${LIB_DIR}/${CMAKE_SHARED_LIBRARY_PREFIX}LLVM)
75 set(LIB_PATH ${LIB_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX})
76 set(LIB_EXPORTS_PATH ${LIB_NAME}.exports)
77 list(APPEND LLVM_DYLIB_REQUIRED_EXPORTS ${LIB_EXPORTS_PATH})
79 add_custom_command(OUTPUT ${LLVM_EXPORTED_SYMBOL_FILE}
80 COMMAND nm ${LIB_PATH} | awk "/T _LLVM/ || /T LLVM/ { print $3 }" | sort -u | sed -e "s/^_//g" > ${LLVM_EXPORTED_SYMBOL_FILE}
81 WORKING_DIRECTORY ${LIB_DIR}
83 COMMENT "Generating Export list for LLVM..."
86 add_custom_target(libLLVMCExports DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE})
88 add_llvm_library(LLVM-C SHARED ${SOURCES})
90 target_link_libraries(LLVM-C PUBLIC LLVM)
91 add_dependencies(LLVM-C libLLVMCExports)
93 set_property(TARGET LLVM-C APPEND_STRING PROPERTY
95 " -compatibility_version 1 -current_version ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH} -Wl,-reexport_library ${LIB_PATH}")